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[common] debug: set the crash handler process name

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This commit is contained in:
Geoffrey McRae
2026-07-29 11:29:57 +10:00
parent 6dd91a1269
commit 56ad487d0a
6 changed files with 37 additions and 12 deletions
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33
common/src/platform/linux/crash.c
View File

@@ -41,6 +41,7 @@
#include <unistd.h>
#include <inttypes.h>
#define CRASH_MAX_FRAMES 64
#define CRASH_REPORTER_NAME "lg_crash_handler"
enum CrashRequestType
{
@@ -305,8 +306,26 @@ raw:
DEBUG_ERROR("[trace]: (%u) 0x%" PRIxPTR, i, request->frames[i]);
}
static void reporterLoop(pid_t parent, int requestFd, int responseFd)
static void reporterLoop(
pid_t parent, int requestFd, int responseFd, char * argv0)
{
if (prctl(PR_SET_NAME, CRASH_REPORTER_NAME) != 0)
DEBUG_WARN("Unable to set the crash reporter process name");
if (argv0)
{
const size_t capacity = strlen(argv0);
const size_t nameLength = strlen(CRASH_REPORTER_NAME);
const size_t copyLength =
capacity < nameLength ? capacity : nameLength;
memset(argv0, 0, capacity);
memcpy(argv0, CRASH_REPORTER_NAME, copyLength);
if (capacity < nameLength)
DEBUG_WARN("Unable to set the full crash reporter command line name");
}
// Do not leave an orphaned reporter if the client exits unexpectedly before
// it closes the request pipe.
prctl(PR_SET_PDEATHSIG, SIGKILL);
@@ -328,7 +347,7 @@ static void reporterLoop(pid_t parent, int requestFd, int responseFd)
}
}
static bool startReporter(void)
static bool startReporter(char * argv0)
{
int requestPipe[2];
int responsePipe[2];
@@ -368,7 +387,7 @@ static bool startReporter(void)
{
close(requestPipe [1]);
close(responsePipe[0]);
reporterLoop(parent, requestPipe[0], responsePipe[1]);
reporterLoop(parent, requestPipe[0], responsePipe[1], argv0);
close(requestPipe [0]);
close(responsePipe[1]);
_exit(0);
@@ -511,11 +530,11 @@ static void crit_err_hdlr(int sig_num, siginfo_t * info, void * ucontext)
_exit(128 + sig_num);
}
bool installCrashHandler(const char * exe)
bool installCrashHandler(const char * exe, char * argv0)
{
(void)exe;
if (!startReporter())
if (!startReporter(argv0))
return false;
struct sigaction sigact = { 0 };
@@ -536,8 +555,10 @@ bool installCrashHandler(const char * exe)
#else //ENABLE_BACKTRACE
bool installCrashHandler(const char * exe)
bool installCrashHandler(const char * exe, char * argv0)
{
(void)exe;
(void)argv0;
return true;
}

8
common/src/platform/windows/crash.c
View File

@@ -148,8 +148,10 @@ fail:
return EXCEPTION_CONTINUE_SEARCH;
}
bool installCrashHandler(const char * exe)
bool installCrashHandler(const char * exe, char * argv0)
{
(void)exe;
(void)argv0;
SetUnhandledExceptionFilter(exception_filter);
return true;
}
@@ -159,8 +161,10 @@ void printAllThreadBacktraces(void)
}
#else
bool installCrashHandler(const char * exe)
bool installCrashHandler(const char * exe, char * argv0)
{
(void)exe;
(void)argv0;
return true;
}